<template>
  <div class="char3">
      <!-- 自定义一个div来装我们的图 -->
    <div id="main" style="width: 90%;height:800px;"></div>
  </div>
</template>

<script>
import * as echarts from 'echarts';

export default {
    data(){
        return{
            option:{
            tooltip: {
            trigger: 'item',
            formatter: '{a} <br/>{b}: {c} ({d}%)'
    },
    legend: {
        data: ['直达', '营销广告', '搜索引擎', '邮件营销', '联盟广告', '视频广告', '百度', '谷歌', '必应', '其他']
    },
    series: [
        {
            name: '访问来源',
            type: 'pie',
            selectedMode: 'single',
            radius: [0, '30%'],
            label: {
                position: 'inner',
                fontSize: 14,
            },
            labelLine: {
                show: false
            },
            data: [
                {value: 1548, name: '搜索引擎'},
                {value: 775, name: '直达'},
                {value: 679, name: '营销广告', selected: true}
            ]
        },
        {
            name: '访问来源',
            type: 'pie',
            radius: ['45%', '60%'],
            labelLine: {
                length: 30,
            },
            label: {
                formatter: '{a|{a}}{abg|}\n{hr|}\n  {b|{b}：}{c}  {per|{d}%}  ',
                backgroundColor: '#F6F8FC',
                borderColor: '#8C8D8E',
                borderWidth: 1,
                borderRadius: 4,
                
                rich: {
                    a: {
                        color: '#6E7079',
                        lineHeight: 22,
                        align: 'center'
                    },
                    hr: {
                        borderColor: '#8C8D8E',
                        width: '100%',
                        borderWidth: 1,
                        height: 0
                    },
                    b: {
                        color: '#4C5058',
                        fontSize: 14,
                        fontWeight: 'bold',
                        lineHeight: 33
                    },
                    per: {
                        color: '#fff',
                        backgroundColor: '#4C5058',
                        padding: [3, 4],
                        borderRadius: 4
                    }
                }
            },
            data: [
                {value: 1048, name: '百度'},
                {value: 335, name: '直达'},
                {value: 310, name: '邮件营销'},
                {value: 251, name: '谷歌'},
                {value: 234, name: '联盟广告'},
                {value: 147, name: '必应'},
                {value: 135, name: '视频广告'},
                {value: 102, name: '其他'}
            ]
        }
    ]
}
        }
    },
    methods: {
    draw3 () {
        //通过echarts初始化我们的div
      let myChart = echarts.init(document.getElementById('main'));
        //为这个echarts的图添加属性
      myChart.setOption(this.option, true)
    }

  },
  watch: {
    //数据变化时自动重画，在控制台修改message,会自动重画
    message: function () {
      this.draw3();
    }
  },
  mounted () {
      //页面加载的时候，调用画图方法，画图
    this.draw3();
  }

}
</script>

<style scoped>
.char3 {
  height: 100%;
  width: 100%;
  text-align: center;
  line-height: 160px;
}
</style>
